Nest Protect: Smoke + Carbon Monoxide™


Know more, worry less.

The Nest Protect smoke and carbon monoxide alarm tells you what the problem is and where it is. It also alerts your phone when the alarm goes off or its batteries run low. And you can check on things at any time with the Nest app.

Battery or wired

Nest Protect comes in 2 options, battery powered or 230v wired. Simple check your current smoke alarm to see if you need battery or wired, then select the option above.

Know from anywhere

Connect Nest Protect to Wi-Fi and it will send a message to your phone if the alarm goes off or the batteries run low.

Tells you what and where

It speaks up to tell you if there’s smoke or CO and tells you where the problem is so you know what to do.

Nest Protect sees the CO you can’t

Carbon monoxide is odorless, invisible and deadly. When there’s CO, Nest Protect tells you where it’s hiding.

Nightly Promise

Nest Protect tests its sensors and batteries constantly and lets you know they’re working with a quick green glow at night.

Silence the chirp

Low-battery chirps ever rattle your dreams? Nest Protect shows you its batteries are good. Before you doze off.


Get a friendly alert so you can handle burning toast before a piercing alarm goes off.

Be ready for anything

Prepare for an emergency with the What To Do feature. Enter an emergency contact and if something goes wrong, you’ve got a plan.

Your Nest Protects work together

When one Nest Protect senses trouble, it tells the others and they all speak up at the same time. Even if Wi-Fi is down.

Voice alarms for kids

Children can sleep through alarms. So in addition to alarm sounds, Nest Protect uses voice alarms to wake kids up and help them avoid danger.


Walk under Nest Protect at night and it will light your way.

Width 13.4 cm
Depth 4.1 cm
Height 13.4 cm
Delivery & Returns
We offer a comprehensive nationwide delivery service; we aim to deliver all orders as quickly as possible.
  • Computers & Electrical – 1 to 3 days on stocked items, non stock product up to 10 days.
  • Furniture & Bedding – 7 days stock items, Non Stock varies with supplier.


  • If delivery is urgent check with the local store, we are here to assist.
  • Locations within 30 km of a store are covered daily.
  • Delivery times for rural areas may vary depending on routes and availability.
Free Pick Up In Store

Can’t wait for delivery or don’t want to pay additional charges? It’s incredibly simple to pick up your online order in store and get your hands on your product quickly and easily. Simply select the free pick up in store option and head to your nearest Harvey Norman store to pick up your order.

  1. During checkout, select “Free pick up in store” and select your preferred store.
  2. After your order is placed, you will receive an “order confirmation email” with your “order confirmation number” (this is usually sent out within 2 hours).
  3. Once the store has confirmed your order and reserved the stock, you will receive an email “Ready for collection”.
  4. Bring your "order confirmation number" to the store you selected for pick up, along with photo ID and the credit card you used to make the order.
  5. Speak to one of our staff and your order should be processed in minutes.
Easy returns

If you feel your product has failed a Consumer Guarantee (as defined by Irish Consumer Law) then don't worry you can easily return it to your local Harvey Norman store. We'll even pay for the postage if you live in an area where there is no store. Our returns policy covers any purchased item (conditions apply).

Ask us

You can send us a message to request more information about this product. Just fill in the form below.

Nest Protect: Smoke + Carbon Monoxide™

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